concealyoudaoicibaDictYouDict[conceal 词源字典]
conceal: [14] Conceal can be traced back to the Indo-European base *kel- ‘hide’, which was also the source of English apocalypse, cell, occult, and probably colour. It formed the basis of the Latin verb cēlāre ‘hide’, which was strengthened by the intensive prefix com- to produce concēlāre. This reached English via Old French conceler. Another offshoot of the Latin verb was the adverb clam ‘secretly’; from this was formed the adjective clandestīnus, acquired by English as clandestine in the 16th century.
=> apocalypse, cell, clandestine, hole, holster, occult, supercilious[conceal etymology, conceal origin, 英语词源]
conceal (v.)youdaoicibaDictYouDict
early 14c., concelen, from Old French conceler "to hide, conceal, dissimulate," from Latin concelare "to hide," from com-, intensive prefix (see com-), + celare "to hide," from PIE root *kel- (2) "to cover, conceal" (see cell). Replaced Old English deagan. Related: Concealed; concealing.